Process for preparing reabsorbable polyesters by mass polymerization

US6706854B2 · kind B2 · utility

Assignee

• BOEHRINGER INGELHEIM PHARMA GMBH & CO. KG · DE

Inventors

• Berthold Buchholz · Ingelheim am Rhein, DE
• Matthias Schellhorn · Horrweiler, DE
• Andreas Weber · Rabenau, DE

Key dates

• Filing date: Jan 9, 2003
• Grant date: Mar 16, 2004
• Expiry date: Jan 22, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/785
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing reabsorbable polyesters by bulk polymerisation, wherein the reaction components are melted and homogenised in a stirred reactor, the reaction mixture is then transferred into a number of smaller-volume containers, the reaction mixture is polymerised in these containers and the polyester obtained is isolated by removing it from the containers, and the use of the reabsorbable polyesters thus produced for preparing reabsorbable implants.